This file was given to me by one of my friends from #emu, I can't remember who it was. I believe it was taken from the person's SWC game manual, so it should be accurate. -avatar_Z - http://mana.nfinity.com/node99 ------------------------------------------------------------------------------ byte 0 - numbers of block (low byte) byte 1 - numbers of block (high byte) total numbers of block = (byte1 * 256) + byte0 byte 2 - program execution mode bit: 76543210 X : 0, reserved X : 0=no more split file, the last fule 1=search for next split file X : SRAM memory mapping, 0=mode20, 1=mode21 X : program memory mapping, 0=mode20, 1=mode21 XX : SRAM mode (size), 00=256K, 01=64K, 10=16K, 11=off XX : 00, reserved byte 3~7 - 00, reserved byte 8 - aa, file id byte 9 - bb, file id byte 10 - file type 04: program 05: battery back-up data 08: real-time save data byte 11~511 - 00, reserved